Comment on “Sliding planar conjoined cut-wire-pairs: A novel approach for splitting and controlling the absorption spectra” [J. Appl. Phys. 124, 105103 (2018)]

In a recent article, Al-Badri et al. [J. Appl. Phys. 124, 105103 (2018)] proposed a new method to split a single perfect absorption peak into two separate absorption spectra by using vertical sliding of conjoined cut-wire-pairs (CCWPs).The highest tuning of absorption bands are reported at frequenci...

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Veröffentlicht in:Journal of applied physics 2020-09, Vol.128 (12)
Hauptverfasser: Bakshi, Saikat Chandra, Mitra, Debasis
Format: Artikel
Sprache:eng
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Zusammenfassung:In a recent article, Al-Badri et al. [J. Appl. Phys. 124, 105103 (2018)] proposed a new method to split a single perfect absorption peak into two separate absorption spectra by using vertical sliding of conjoined cut-wire-pairs (CCWPs).The highest tuning of absorption bands are reported at frequencies 3.242 GHz and 3.640 GHz with absorptivity of about 90%. This comment expresses some concerns about the simulation environment and absorption characteristics of such an approach. Moreover, it is shown that the actual absorption peak is around 40% while simulated with periodic boundary conditions.
ISSN:0021-8979
1089-7550
DOI:10.1063/5.0013984